Instrument holder construction for dental units and the like



y 20,.1947- E. L. MONNOT 2,420,901

INSTRUMENT HOLDER CONSTRUCTION FOR DENTAL UNITS AND THE LIKE Filed Nov.4, 1943 3 Sheets-Sheet l Fig.1

awe/Wm I Edwam /wmmz 37km wg aw May 20, 1947. E, L, ONNOT 2,420,901

.INSTRUMENT HOLDER CONSTRUCTION FOR DENTAL UNITS AND THE LIKE Filed Nov.-4, 1943 3 Sheets Sheet 2 Fig.2 r I SMWM Edwc zrdL. Monnai May 20, 1947.E. MQNNOT INSTRUMENT HOLDER CONSTRUCTION FOR DENTAL UNITS AND THE LIKEFiled Nov. 4, 1945 5 Sheets-Sheet 5 3nnentor EdwqrdLMahnoi Patented May20, i947 INSTRUMENT HOLDER CONSTRUCTION FOR DENTAL UNITS AND THE LIKEEdward L. Monnot, Canton, Ohio, assignor to The Weber DentalManufacturing Company, Canton, Ohio, a corporation of Ohio ApplicationNovember 4, 1943, Serial No. 508,933

12 Claims. 1

The invention relates to instrument holder doors for dental units andthe like, including a mounting member such as a door frame, a door orfirst swinging member operatively mounted for swinging movement on themounting mern- I ber, preferably a second swinging member op-' erativelymounted for swinging on the first swinging member during movement of thefirst swinging member, and a slide operatively mounted for sliding onthe second swinging member during movement of the second swinging rnem-'her and the first swinging member.

In a dental unit, the door may swing to and from closed and openpositions in the door frame opening of an instrument panel compartment,

and the slide may be an instrument mounting bracket, the operation beingsuch that when the door is swung about a horizontal hinge axis to anopen position with respect to the opening, the second swinging memberswings away from the inner face of the door, and the instrument mountingbracket slide with the instruments mounted therein slides outwardly onthe second swinging member away from the horizontal hinge axis of thedoor.

Various arrangements of such dental instrument holder doors have beenused in an effort to obtain automatic operation of the swinging andslide parts with respect to each other, but prior to the presentimprovements none have been satisfactory to the desired degree inproviding definite and certain repeating movements of the parts withoutinterference, and at the same time being of simplified construction andarrangement.

The objects of the present invention include the provision of instrumentholder construction for dental units and the like in which a slide isoperatively mounted on a swinging member which may itself be mounted onanother swinging memher, and in which relative movement of the parts isobtained in such manner that the relative movements are exactlyrepeated.

Further objects of the present invention include the provision of suchdental instrument holder doors in which the parts are of simplifiedconstruction and arrangementwhereby the apparatus may be economicallymanufactured and maintained.

The foregoing and other objects are attained by the door apparatus,parts, combinations, and sub-combinations which comprise the presentinvention, and the nature of which is set forth in the following generalstatement an'd' preferred embodiments of which are set forth inthef'ollowing description, and which are particularly and distinctlypointed out and set forth in the appended claims forming part hereof.

The nature of the improved dental instrument holder construction of thepresent invention may be stated in general terms as including a mountingmember, a first swinging member operatively mounted for swingingmovement on the mounting member, preferably a second swinging memberoperatively mounted for swinging on the first swinging member, and aslide operatively mounted for sliding on the second swinging member, andbelt and pulley means operatively associated with the slide and swingingmembers for auto-' matically moving th slide with respect to theswinging members during operation of the swingpresent invention and ofimproved parts thereof, are illustrated in the accompanying drawingsforming part hereof in which Figure l is a fragmentary elevational viewwith portions in section showing a dental unit including one embodimentof the improved instrument holder and door apparatus hereof, theinstrument holder and door parts being shown in their relative positionswhen the door is open;

Fig. 2, a fragmentary view looking in the direction of the arrows 2-2Fig. 1, showing the relative positions of the parts when the door isclosed;

Fig. 3, a transverse sectional view thereof as on line 3-3 Fig. 2, withcertain distant parts removed;

Fig. 4 is a fragmentary perspective view of the door in open position asin Fig. 1; and

Fig. 5 is a fragmentary elevation illustrating details of the hingemeans for the door.

Similar numerals refer to similar throughout the several views.

The dental unit indicated generally by It includes a hollow standard orcolumn ll having an upper compartment l2 in which is located aninstrument panel l3 at the rear of the door frame indicated generally by14 formed in front walls of the column I I.

The door frame I4 surrounds the door opening l5, and a. door I6 ioperatively mounted or hinged on a horizontal axis on the column II asby usual hinge means for swinging to and from closing position in thedoor opening l5-of the door frame M. The open position of the door I6 iscontrolled by stop'finger 16a mountedon the parts 3 door and engagingpin 42-2 carried by the door frame.

As shown, for providing the hinge means, one stop finger liia is mountedat each side of the door in the form of a segmental plate on the outerface of which is provided an arcuate groove lBzz-l which rides on a pinHid-2 extending from the adjacent side member I la of the door frame M,as illustrated in Figs. 4 and 5, and which is not practical to beillustrated in the other views, Figs. 1, 2, and 3.

The column I I and its door frame ll thus constitute a mounting memberin which the door or first swinging member I5 is operatively mounted forswinging about a horizontal hinge axis.

On the door or first swinging member l5, guide means I! constitute asecond swinging member which are operatively mounted for swinging abouta, horizontal axis on the first swinging member it as by a, hingeconnection generally indicated at Ha between the members I1 and Mia. Theguide means IT, as shown, include a rectangular panel having outerparallel guide channels l8 having opposite channel openings 1-9 openingtoward each other.

An instrument mounting bracket slide, indicated generally by '20, asshown consists of a transverse panel bar '38 with a flange 20a. Theedges of panel 38 are slidable in the guide channels l8 toward and awayfrom the hinge axes of the first and second swinging members l6 and I1.Belt and pulley actuating means indicated generally by '2! areoperatively associated with the swinging members It and 11, the slidemember 20, and the mounting member i As shown, the belt and pulleyactuating means 2| include an arm 22 extending rearwardly from the innerface of the lower end 23 of the door or first swinging member 15.

A pulley 24 is operatively mounted on a bracket 25 on the rear face ofthe lower end of the instrument panel 13 above the outer end 26 of thearm 22 within the column H. On the inner face of the front wall 21 ofthe column ll below the outer end 23 of the arm 22, lower pulley 28 isoperatively mounted on a. bracket.

An upper pulley 36 above the lower pulley 28 is similarly operativelymounted 'on a bracket 3| on the inner face 'of the column front wall 21below the door opening [5.

On one side face 32 of the arm 22 adjacent the inner face of the innerend 23 of the door or first swinging member I6, pair of side by sidepulleys 33 are mounted as by a screw shaft 34.

The second swinging member IT preferably as shown is in the form of arectangular panel, and has formed therein a depressed portion H-lopening away from the first swinging member l6,

and within the depressed portion Il-i of the another end 3 9 which ispreferably connected 7 with one end of a tension spring 40, the otherend of which is connected with the transverse panel bar 38. g Y

The depressed portion i l-i of the second swinging member I! opens awayfrom the first swinging member I6, as above stated, and also towards theinstrument mounting bracket slide 20, and in addition to the pulley 35the depressed portion l'll accommodates the cord belt 36 and the tensionspring 40.

Between the pulleys 24 and 28, the outer end 25 of the arm 22 has aconnection 4! by two screws with the pulley cord 36.

The guide means or second swinging member i! is arranged for automaticswinging on the door or first swinging member l6, as shown by providingat one or both sides of the swinging member i! an arm 42-4 extendingbelow and rearwardiy of the hinge connection Ila of the second swingingmember ll, the rear end of each arm 4'2l being abuttable against the pin42-2 extending inwardly from the adjacent side member of the door frameI l.

At the lower hinged end of the second swinging member H, as shown, thereis located a cross bar 11- -2 on the upper face of which is secured thearm or arms 12-4. The hinged connection i'l-a of the second swingingmember ll, as shown, is a headed screw 1 1-4 having a shank passingthrough enlarged apertures in the bar il-Z and in the lower end of therectangular panel swinging member I1, and the shank bein screwed intothe lower end of the door or first swinging member 1'6. The connectionof the second swinging member I! on the first swinging member I5, asshown, may otherwise be described as a loose connection permittingswinging of the members i! and l 6 with respect to each other.

The instrument mounting bracket slide as, as shown, includes a pluralityof tubular holders 43 and '44 mounted on flange 20a, in each of whichmay be inserted in a usual manner an instrument not shown, which may beserved in a usual manner by a flexible tubular conduit, not shown,extending into the column I l In operation, when the door is closed, theparts of the improved door apparatus are in the relative positions shownin Fig. '2 with the instrument mounting bracket slide 29 retracted inthe guide means IT to its position closest to the lower end 23 of thedoor I6.

Upon opening the door 1'6 to the position shown in Fig. l, the guidemeans I? swings upwardly to the position shown in-Fig. l, and theoperation of the belt and pulley means 2| is such as to extend theinstrument mounting bracket slide 25 to the outermost position;shown inFig. 1, Where the instruments carried thereby are accessible for use.

The relative movements of the swinging members l5 and I1 and the slidemember 2B, are exactly repeated with each opening and closing or theswinging member or door l5, by the action of the belt and pulley means21. Thus there is no interference of the parts with each other or withinstruments carried on the slide 25, as is otherwise the case, when theautomatic movement of the parts is not provided.

The cord belt 35 may be otherwise described as having a closed loopconnection with the instrument mounting bracket slide 20, the closedloop pas'sin'gar'ound the pulley 35 on the second swinging member I1,and the outermost pulley 33 on the first swinging member I5, and thepulleys 39, 28, and 21 on the mounting member H, and the other pulley 33on the second swinging member H.

The embodiments of the present improvements illustrated and describedherein are by way of example, and the scope of the present invention isnot limited to the same or to the particular details thereof, but iscommensurate with any and all novel subject matter contained hereinwhich may at any time properly under the United States patent laws beset forth in the and mounting member for automatically moving the sliderelatively to the swinging member during movement of the swingingmember, the belt and pulley means including a belt having a closed loopconnection with the slide and passing around the several pulleys, andthere being belt actuating connecting means between the belt and theswinging member.

2. In dental instrument holder construction and the like, a mountingmember and a first swinging member, means operatively mounting the firstswinging member for swinging movement on the mounting member, a secondswinging member, means operatively mounting the second swinging memberfor swinging movement on the first swinging member, a holder slide,means operatively mounting the slide for sliding on the second swingingmember, and belt and plural pulley means operatively associated with theslide and swinging members and mounting member for automatically movingthe slide relatively .to the swinging members during movement of theswinging members.

3. In dental instrument holder construction and the like, a mountingmember and a, first swinging member, means operatively mounting thefirst swinging member for swinging movement on the mounting member, asecond swinging member, means operatively mounting the second swingingmember for swinging movement on the first swinging member, a holderslide, means operatively mounting the slide for sliding on the secondswinging member, and means operatively associated with the slide andswinging members and mounting member for automatically moving the sliderelatively to the swinging members during movement of the swingingmembers.

4. In dental instrument holder construction and the like, a mountingmember and a movable member, means operatively mounting the movablemember for movement towards and away from the mounting member, a slide,means operatively mounting the slide for sliding on the movable member,and closed loop belt and plural pulley means operatively associated withthe slide and movable member and mounting member for automaticallymoving the slide relatively to the movable member during movement of themovable member.

5. In dental instrument holder construction and the like, a mountingmember and a first movable member, means operatively mounting the firstmovable member for movement towards and away from the mounting member, asecond movable member, means operatively mounting the second movablemember for movement on the first movable member, a slide, meansoperatively mounting the slide for sliding on the secondmovable member,and belt and pulley means operatively associated with the slide andmovable members and mounting member for automatically moving the sliderelatively to the movable members during movement of the movablemembers.

6. In dental instrument holder construction and the like, a mountingmember and a first movable member, means operatively mounting the firstmovable member for movement towards and away from the mounting member, asecond movable member, means operatively mounting the second movablemember for movement on the first movable member, a slide, meansoperatively mounting the slide for sliding on the second movable member,and means operatively associated with the slide and movable members andmounting member for automatically movingthe slide relatively to themovable members during movement of the movable members.

7. In dental instrument holder construction and the like, a mountingmember and a movable member, means operatively mounting the movablemember for movement towards and away from the mounting member, areciprocating holder member, means operatively mounting thereciprocating member for reciprocating movement on the movable member,and closed loop belt and plural pulley means operatively associated withthe reciprocating member and movable member and mounting member forautomatically moving the reciprocating member relatively to the movablemember during movement of the movable member.

8. In dental instrument holder construction and the like, a mountingmember and a first movable member, means operatively mounting the firstmovable member for movement towards and away from the mounting member, asecond movable member, means operatively mounting the second movablemember for movement on the first movable member, a reciprocating holdermember, means operatively mounting the holder member for reciprocatingon the second movable member, and belt and pulley means operativelyassociated with the reciprocating member and movable members and themounting member for automatically moving the reciprocating memberrelatively to the movable members during movement of the movablemembers.

9. In dental instrument holder construction and the like, a mountingmember and a first movable member, means operatively mounting the firstmovable member for movement towards and away from the mounting member, asecond movable member, means operatively mounting the second movablemember for movement on the first movable member, a reciprocating h'oldermember, means operatively mounting the holder member for reciprocatingon the second movable member, and means operatively associated with thereciprocating member and movable members and the mounting member forautomatically moving the reciprocating member relatively to the movablemembers during movement of the movable members.

10. In dental instrument construction and the like, a mounting memberand a movable member, means operatively mounting the movable member formovement towards and away from the mounting member, a holder member,means operatively mounting the holder member for movement on the movablemember, and closed 7 loop belt and plural pulley means operativelyassociated with the members for automatically moving the holder memberrelatively to the movable member during movement of the movable member.

11. In dental instrument holder construction and the like, a mountingmember and a first movable member, means operatively mounting the firstmovable member for movement towards and away from the mounting member, asecond movable member, means operatively mounting the second movablemember for movement on the first movable member, a third movable memberadapted for use as an instrument holder and the like, means operative-1ymounting the third movable member for movement on the second movablemember, and belt and pulley means ope'rative'ly associated with themovable members and the mounting member for automatically moving thethird movable member relatively to the first and second movable membersduring movement of the first and second movable members.

12. In dental instrument holder construction and the like, a mountingmember and a first movable member, means operatively mounting movablemember, and means operatively associated with the movable members andthe mount ing member for automatically moving the third movable memberrelatively to the first and second movable members during movement ofthe first and second movable members.

EDWARD L. MONNOI.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,261,036 Pieper Oct. .28, 19412,214,775 P ieper Feb. 23, 1938

